Debian DSA-2053-1 : linux-2.6 - privilege escalation/denial of service/information leak

high Nessus Plugin ID 46725



The remote Debian host is missing a security-related update.


Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2009-4537 Fabian Yamaguchi reported a missing check for Ethernet frames larger than the MTU in the r8169 driver. This may allow users on the local network to crash a system, resulting in a denial of service.

- CVE-2010-0727 Sachin Prabhu reported an issue in the GFS2 filesystem.
Local users can trigger a BUG() altering the permissions on a locked file, resulting in a denial of service.

- CVE-2010-1083 Linus Torvalds reported an issue in the USB subsystem, which may allow local users to obtain portions of sensitive kernel memory.

- CVE-2010-1084 Neil Brown reported an issue in the Bluetooth subsystem that may permit remote attackers to overwrite memory through the creation of large numbers of sockets, resulting in a denial of service.

- CVE-2010-1086 Ang Way Chuang reported an issue in the DVB subsystem for Digital TV adapters. By creating a specially-encoded MPEG2-TS frame, a remote attacker could cause the receiver to enter an endless loop, resulting in a denial of service.

- CVE-2010-1087 Trond Myklebust reported an issue in the NFS filesystem.
A local user may cause an oops by sending a fatal signal during a file truncation operation, resulting in a denial of service.

- CVE-2010-1088 Al Viro reported an issue where automount symlinks may not be followed when LOOKUP_FOLLOW is not set. This has an unknown security impact.

- CVE-2010-1162 Catalin Marinas reported an issue in the tty subsystem that allows local attackers to cause a kernel memory leak, possibly resulting in a denial of service.

- CVE-2010-1173 Chris Guo from Nokia China and Jukka Taimisto and Olli Jarva from Codenomicon Ltd reported an issue in the SCTP subsystem that allows a remote attacker to cause a denial of service using a malformed init package.

- CVE-2010-1187 Neil Hormon reported an issue in the TIPC subsystem.
Local users can cause a denial of service by way of a NULL pointer dereference by sending datagrams through AF_TIPC before entering network mode.

- CVE-2010-1437 Toshiyuki Okajima reported a race condition in the keyring subsystem. Local users can cause memory corruption via keyctl commands that access a keyring in the process of being deleted, resulting in a denial of service.

- CVE-2010-1446 Wufei reported an issue with kgdb on the PowerPC architecture, allowing local users to write to kernel memory. Note: this issue does not affect binary kernels provided by Debian. The fix is provided for the benefit of users who build their own kernels from Debian source.

- CVE-2010-1451 Brad Spengler reported an issue on the SPARC architecture that allows local users to execute non-executable pages.

This update also includes fixes a regression introduced by a previous update. See the referenced Debian bug page for details.


Upgrade the linux-2.6 and user-mode-linux packages.

For the stable distribution (lenny), these problems have been fixed in version 2.6.26-22lenny1.

The user-mode-linux source package was additional rebuilt for compatibility to take advantage of this update. The updated version of the package is 2.6.26-1um-2+22lenny1.

See Also

Plugin Details

Severity: High

ID: 46725

File Name: debian_DSA-2053.nasl

Version: 1.13

Type: local

Agent: unix

Published: 5/26/2010

Updated: 1/4/2021

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: E:POC/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:linux-2.6, cpe:/o:debian:debian_linux:5.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/25/2010

Vulnerability Publication Date: 1/12/2010

Reference Information

CVE: CVE-2009-4537, CVE-2010-0727, CVE-2010-1083, CVE-2010-1084, CVE-2010-1086, CVE-2010-1087, CVE-2010-1088, CVE-2010-1162, CVE-2010-1173, CVE-2010-1187, CVE-2010-1437, CVE-2010-1446, CVE-2010-1451

BID: 37521, 38393, 38479, 38898, 39042, 39044, 39101, 39120, 39480, 39569, 39719, 39794, 39798

DSA: 2053

CWE: 20